Look at the quality of Solar Pathway Lights from the wire
- By:Scotsgaelic Trade
The country continues to develop and revitalize the countryside. Solar Pathway Lights is used in the mainstream products of rural road lighting lighting. Professional manufacturers come to share a share. Constantly lowering the price, all kinds of irresponsibility to customers, the same Solar Pathway Lights, the effect quality is varied.
In recent years, the battery voltage of Solar Pathway Lights is mainly concentrated at 3.2V (3.7V), 6.4V (7.4V) and 12.8V (11.1V). In particular, 3.2V accounts for the largest proportion. One is that the series battery has high requirements on battery characteristics (another article); the other is that the scrapped batteries of electric vehicles have flowed into the Solar Pathway Lights market in recent years. The capacity of a single battery is large, and Solar Pathway Lights are used. A section or two is enough.
In the past few years, the 12.8V (11.1V) battery system was the mainstay, and the voltage of the LED light source ranged from 12V to 30V. Even if the power of the street lamp was 60W, the current in the system was about 2A-4A, and the current would be relatively small. The diameter of the wires used in the system does not need to be very thick, and 1 square meter is enough to support.
But now that the battery voltage is changed to 3.2V, the voltage of the system will be greatly reduced while the power of the system remains unchanged, and the current will increase exponentially, so the wire diameter will increase accordingly. (Example: The voltage of the solar panel is 18V, the power is 80W, and the maximum current is less than 5A, just use 1 square wire. Now the voltage of the solar panel is reduced to 6V or 5V, and the power is 80W. If the power remains unchanged, the current becomes 13.3A to About 16A, at least 2.5 square meters of wires should be used)
The two most important wires here are the wires from the solar panel to the controller, the wires from the battery to the controller, and the wires from the controller to the LED light board. The diameter of the wires should be increased accordingly as the current increases.
This was originally a common-sense job, but I found that many manufacturers ignored or didn’t know to increase the wire diameter, and only considered the cost input. They catered to customers’ acceptance of the price while still making profits. Anyway, they can turn on the lights and work. As for the responsibility to customers, it is my price.
The harm caused by wires that do not meet the current requirements may not be felt on the day of installation, or within a few days, but it will begin to appear as time goes by. The problems that arise are mainly as follows:
1. The wire diameter is small and the current is high, causing the wire to become hot and hot. At the same time as the power is lost, the wire joint is burned or the wire skin is cracked and short-circuited, resulting in permanent damage to the street lamp.
2. The power generation of solar panels cannot reach the design power. Even if you choose to increase the power of large solar panels when purchasing, the actual power generation will be lowered to the limit, and the corresponding battery will not be able to charge the power required by the design during the day. Brightness and battery life will also continue to decrease. Eventually, the brightness of the night lighting will become darker and darker, and the permanent damage of the battery will be accelerated.
3. For customers, it is necessary to carry out fault maintenance frequently, which increases investment costs.
Wires are the easiest to ignore in the procurement and selection of street lamp products, but they are also very harmful. Therefore, it is necessary to have a certain technical knowledge of the product, understand whether the wire diameter meets the requirements, and avoid stepping on the pit. Of course, try to choose some regular factory products.